内蒙古上库力地区铅锌多金属矿成矿条件与矿产预测

发布时间：2018-08-07 09:35

【摘要】：研究区位于得尔布干成矿带的东南侧,区内火山岩、侵入岩较发育,具有较好的成矿条件。同处这一成矿带上的俄罗斯、蒙古国均取得了重大找矿进展,我国也发现了得耳布尔铅锌矿、下护林铅锌矿、二道河子铅锌矿,八八一铜钼矿及额仁陶勒盖银矿等一批多金属矿。所以认为研究区具有较大的找矿潜力。本文从地质、地球物理、地球化学等方面详细阐述了内蒙古自治区呼伦贝尔市上库力地区多金属成矿条件。详细阐述了研究区地层、构造、岩浆岩特征,通过采样分析确定了研究区主要地质体的岩石化学特征和年代;通过航磁数据解译和高精度磁法测量工作查明了研究区主要地质体的磁性特征,通过高磁数据的求导了解了深部构造特征;通过主成矿元素分析确定了研究区各填图单位的含矿性,通过地球化学测量确定了研究区地球化学找矿标志。同位素年代学数据表明研究区火山岩形成于晚侏罗至早白垩世,时代集中,喷发强度大,研究区大面积发育的酸性侵入岩时代与火山岩相当。航空布格重力异常图显示研究区有北东向断裂通过;航磁和高磁特征可将研究区划分为五个区,构造以线型构造和环型构造为主,褶皱构造不发育;地球化学特征显示研究区的新元古代佳疙瘩组、中生代中基性火山岩和酸性火山岩为主要的矿源层,侵入岩与火山岩的接触部位是找矿有利部位。研究区构造发育,热液通道畅通,多处可见延伸数十至数百米的石英脉,石英脉含萤石。
[Abstract]:The study area is located on the southeast side of the Delbugan metallogenic belt. The volcanic rocks and intrusive rocks in the study area are relatively developed and have better metallogenic conditions. Russia and Mongolia, which are also located in this metallogenic belt, have made significant progress in prospecting. China has also discovered the Deerbur lead-zinc ore, the lower protected forest lead-zinc ore, the Erdaohezi lead-zinc ore. Eight 81 copper and molybdenum ore and Yerren Taulege silver ore and a number of polymetallic ore. Therefore, it is considered that the study area has great prospecting potential. In this paper, the polymetallic metallogenic conditions in Shangkuli area of Hulunbeir City, Inner Mongolia Autonomous region, are described in detail in terms of geology, geophysics and geochemistry. The characteristics of strata, structures and magmatic rocks in the study area are described in detail, and the petrochemical characteristics and ages of the main geological bodies in the study area are determined by sampling and analysis. Through the interpretation of aeromagnetic data and high-precision magnetic survey, the magnetic characteristics of the main geological bodies in the study area are found out, and the deep structural characteristics are obtained by the derivation of the high-magnetic data. The ore-bearing characteristics of the mapping units in the study area were determined by the analysis of the main metallogenic elements, and the geochemical prospecting criteria were determined by geochemical measurement. Isotopic chronological data show that volcanic rocks were formed from late Jurassic to early Cretaceous in the study area with concentrated age and large eruption intensity. The acidic intrusive rocks developed in a large area in the study area were similar to volcanic rocks. Aeronautical Bouguer gravity anomaly map shows that there are NE faults in the study area, aeromagnetic and high magnetic characteristics can be divided into five regions, the structure is mainly linear structure and annular structure, fold structure is not developed. Geochemical characteristics show that the Mesozoic Mesozoic volcanic rocks and acid volcanic rocks are the main source beds in the Neoproterozoic Jiakelin formation in the study area. The contact position between intrusive rocks and volcanic rocks is favorable for ore prospecting. The structure of the study area is developed and hydrothermal channels are open. Quartz veins extending tens to hundreds of meters are found in many places, and quartz veins contain fluorite.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.2

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